CONTENTS
3
8018429/1DWP/V3-0/2022-06| SICK A D D E N D U M T O O P E R A T I N G I N S T R U C T I O N S | GMS840
Subject to change without notice
1 For your safety............................................................................................ 5
1.1 Symbols and document conventions ............................................................. 5
1.1.1 Warning symbols ............................................................................ 5
1.1.2 Warning levels and signal words.................................................... 5
1.1.3 Information symbols ....................................................................... 6
1.2 Responsibility of user...................................................................................... 6
1.3 Scope of application ....................................................................................... 7
1.3.1 Principal application limitations..................................................... 7
1.4 Main safety information.................................................................................. 7
1.5 Additional documentation/information.......................................................... 7
2 Product description ................................................................................... 9
2.1 Product identification......................................................................................9
2.1.1 Type plate........................................................................................ 9
2.2 Product description.......................................................................................10
2.2.1 Product characteristics.................................................................10
2.2.2 Options ..........................................................................................10
2.3 Opening the enclosure cover........................................................................11
2.3.1 Safety measures before opening the enclosure .........................11
2.3.2 Opening the enclosure .................................................................13
3 Installation ................................................................................................14
3.1 Safety during transport and mounting .........................................................14
3.1.1 For GMS841 (ATEX/ IECEx) and GMS842 (CCSAUS) ....................14
3.2 Scope of delivery ...........................................................................................14
3.3 Mounting .......................................................................................................15
3.3.1 Ensuring ambient conditions .......................................................15
3.3.2 Fitting the enclosure.....................................................................15
3.4 Special protective measures (as required) ..................................................15
3.4.1 Protecting against dangerous sample gases ..............................15
3.4.2 Protecting against corrosive atmospheres ..................................15
3.4.3 For GMS841 (ATEX/ IECEx) and GMS842 (CCSAUS) ....................16
3.5 Gas connections............................................................................................16
3.5.1 Sample gas inlet ...........................................................................16
3.5.2 Sample gas outlet.........................................................................16
3.5.3 Feeding purge gas to an Analyzer module (option).....................16
3.5.4 Feeding purge gas for the enclosure (option) .............................16
3.6 Electrical connections...................................................................................17
3.6.1 Opening the enclosure .................................................................17
3.6.2 Connecting the power connection ...............................................18
3.6.3 Connecting the signal connections (as required)........................19
3.6.3.1 I/O module (standard) ..............................................19
3.6.3.2 Intrinsically safe signal connections (option) ..........19
3.6.4 Connecting the interfaces (as required) .....................................19
